are my tomato plants dead?

I left my tomato plants outside last night and we got a frost, (although last time i checked the weather we werent supposed to). I left them out and this morning they were all wilted over, they were sitting on my porch all night. are they most likely all dead? Or do i have a chance?

thanks
HERE IS A PIC....
they seemed to have perked up a bit after being in the sun for a few hours

If they are perking back up you are OK...unless it froze the growing tip maybe. Really dead is when they turn dark green and don't revive. We are having a lot of drops into the thirties at night here and it is very odd for April. I would ordinarily have tomatoes in the ground by now but I am moving them back and forth into the house at night.

"We're all just walking each other home." -Ram Dass
"Be a lamp, or a lifeboat, or a ladder."-Rumi

OK, I just wanted to suggest that when you transplant them you plant them deep. I usually bury the stem and leave the top few leaves out of the ground. The stem will grow roots and help get the plant going.